Dual brush vacuum cleaner



FIG. 1 is a rear elevation view of a dual brush vacuum cleaner showingmy new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a perspective view thereof;

FIG. 6 is a right side elevation view thereof; and,

FIG. 7 is a left side elevation view thereof.

The ornamental design for a dual brush vacuum cleaner, as shown.